Phonograph-motor mechanism.



T. c. wmnm. PHONOGRAPH MOTOR MECHANISM. APPLlCATlON FILEDVSEPTA, 1912.

{276,601 Patented'Aug. 20, 1918.

Z Z .5 5 J Z 14 14..44144414444444!!! 44 4 4 Z4 56 J in] 57 :75 J9 5 21 25 #w flflw i 5% g 1 4 W 27 ,fiwfA ra/ includes the combination THEO CLIFFORD WHITING, or PHILADELPHIA, PENNSYLVANIA,

PHONOGRAPH-MOTOB MECHANISM.

reracor.

. Application filed September 4, 1917.

To aZZ whom it may concern Be it known that I, THEo CLrrroRn lVHiT- iNo. a citizen of the United States, residing at Philadelphia, in the State of Pennsylvania, have invented a certain new and use ful Improvement in Phonograph Motor Mechanism, whereof the following is a specification, reference being had to the accompanying drawings.

This invention is designed and adapted for use in connection with electric motors of gramophones and similar talking machines to variably control and regulate the speed of rotation of a turn table for a sound record.

As hereinafter described, my invention with a rotary table for a. sound record;-of a wheel arranged to turn said table; a motor arranged to rotate said wheel; and a pivotally supported frame for said motor, so arranged that the weight of said motor tends to maintain said wheel in operative relation with said table. Power is transmitted, from said motor to said turn table, through an" automatically operativerotary coupling including relatively axially and circumferentially movable friction members respectively operatively connected with said motor and with said turn table; and variations in the frictional engagement of said friction members are automatically effected by adjustable governor mechanism including a weight which is free to move centrifugally in accordance withthe speed of rotation to which it is subjected; where by said turn table may be rotated at any predetermined. uniform rate, within the range of adjustment of said governor mechanism, regardless of variations in the rate of rotation of said motor.

Although I have illustrated my invention as applied to an electric motor adapted to be energized by an alternating current; it

- is to be understood that it may be utilized in connection with a rotary motor of any kind.

My invention includes the various novel features of construction and arrangement hereinafter more definitely specified.

In the drawings: Figure I is a vertical sectional view of a rotary table for a sound record arranged to be turned by an QlQCtIlU.

motor provided with a convenient embodi ment of my invention.

Fig. II is a fragmentary longitudinal sectional view showing the construction and arrangement of the friction coupling and Specification of Letters Patent.

Patented Aug. 20, rare. Serial No. 189,639.

the adjacent portions of the heel shaft and the motor armature shaft which-drives it.

In said figures; the rotary table 1 is provided with the felt cover 2 and axial stud 3 to support the sound record 5. Said table is mounted to rotate upon the vertical shaft 6 which is stationary upon the frame plate 7 and provided with the hardened point 8 which supports the weight of said table. Said plate 7 forms the top of a casing 10 which incloses the driving mechanism including a swing frame 11 carrying the induction motor 12. I Said motor has the rotary armature shaft 13, journaled in' the bearing 14: of its casing 15, which is rigidly connected with said swing frame 11, and also in the standard 17, rigidly connected with said frame. Said motor shaft 13 has the fly wheel 19 rigidly connected therewith and carrying the friction member 20, which is conveniently a leather ringembedded in the hub 21 of said wheel 19.

Said shaft 13 is in axial alinement with i the wheel shaft 23 which carries the driving wheel 2i engaging the annular surface 25 of said table 1, so as to turn the latter. Such engagement is conveniently effected by providing said wheel 2% with a surface of leather or other suitable material capable of frictionally engaging a comparatively smooth surface. However, it is to be understood that said wheel 24 may be provided with gear teeth arranged to engage corresponding teeth on said table 1; such teeth being preferably of spiral form so that their cooperation is practically silent.

As shown in Fig. II, said shafts 13 and 23 are held in axial alinement by the screw stud 27 which is rigidly connected with said shaft 23 but free to, turn in said hub 21 of the fly wheel 19, which latter, as above described, is rigidly connected with said shaft 13. owever, such connection is neither designed nor adapted to transmit rotary motion from said shaft 13 to said shaft 23. Such motion and the power to turn said rotary table 1 are trasmitted through the automatically operative rotary coupling for said shafts which includes said friction member 20 which is fixed in saidwhee'l 19 and carried by said shaft 13, and the opposing friction member 29 which is a disk carried by, and axially movable on, said shaft 23, but adapted to turn the latter by engagement of the key 30. Said friction rhember 29 is constantly pressed toward said friction,

and a pivotal support a frame for said motor, so arranged that the weight of said motor tends to maintain said wheel in ope *at-ive relation with said table, regardless of variations in the position of the latter; a pivotal support for said frame; and means arranged to minimize transmission of vibration at said pivotal support; whereby said turn table may be rotated at a predetermined uniform rate, by said armature shaft, regardless of variations in the rate of rotation of said armature shaft.

The combination with a rotary table for a sound record; of a wheel arranged to turn said table; a rotary shaft carrying said wheel; an electric motor, having a rotary armature shaft in axial alinement with said wheel shaft; an automatically operative rotary coupling for said shafts, including relatively axially andcircumferentially movable friction members respectively carried by them; adjustable governor mecha, nism carried by said'wheel shaft and connected with the friction member on that shaft to shift said member axially,including a weight, means connectingsaid weight with said wheel shaft, arranged to permit said weight to move toward and away from the axis of that shaft, in accordance with the speed of rotation of said wheel shaft, and manually operative means arranged to variably regulate the speed of rotation of said table, including means arranged to axially adjust said weight connecting means; a frame for said motor,so arranged that the weight of said mot'or tends to maintain said wheel in operative relation with said table, regardless of variations in the for said frame; whereby said turn table may be rotated at a predetermined uniform rate, by said armature shaft, regardless of variations in the rate of rotation of said armature shaft.

3. The combination with a rotary table for a sound record; of a wheel arranged to turn said table ;'a rotary shaft carrying said wheel; an electric motor, having a rotary armature shaft in axial alinement with said wheel shaft; an automatically operative rotary coupling for said shafts, including rela ti'vely axially and circumferentially movable friction members respectively carried by them; adjustable governor mechanism carried by said wheel shaft and connected with the friction member on that shaft to shift said member axially, including a weight, means connecting said weight With said wheel shaft, arranged to'permit said weight to move toward and away from the axis of that-shaft, in accordance with the speed of rotation of said wheel shaft, and manually operative means arranged to variably regulate the speed of rotation of said table, including means arranged to axially adjust said weight by said connecting means; wheretnrn table may be rotated at a position of the latter;

coupling for said shafts,

said weight with said tit predetermined uniform rate, by said armature shaft. regardless of variations in the rate of rotation .of said armature shaft.

l. The combination with a rotary table for a sound record; of a wheel arranged to turn said table; a rotary shaft carrying said wheel; an electric motor, having a rotary armature shaft; an automatically operative rotary coupling for said shafts, including relatively axially and circumferentially movable friction members respectively carried by them; adjustable governor mechanism carried, by said wheel shaft and connr ted with the friction member on that shaft to shift said member axially, including a weight, means connecting said weight with said wheel shaft, arranged to permit said weight to move toward and away from the axis of that shaft, in accordance with the speed of rotation of said wheel shaft, and manually operative means arranged to variably' regulate the speed of rotation of said table, including means arranged to axially adjust said weight connecting means; whereby said turn table may be rotated at a predetermined uniform rate, by said armature shaft, regardless of variations 'in'the rate of rotation of said armature shaft.

5. The combination with a rotary table for a sound record; of a wheel arranged to turn said table; a rotary shaft carrying said wheel; an electric motor, having a rotary armature shaft; an automatically operative rotary coupling for said shafts, including relatively movable friction members respectively carried by them; adjustable governor mechanism carried by said .whecl shaft and connected with the friction member on that shaft, including a weight, means connecting said weight with said wheel shaft, arranged to permit said weight to move to ward and away from the axis of that shaft, in accordance with the speed of rotation of said wheel shaft, and manually operative means arranged to variably regulate the speed of rotation of said table, including means arranged to adjust said weight connecting means; whereby said turn table may be rotated at a predetermined uniform rate,

'by'said armature shaft,'regardless of variations in the rate of electric motor, having an armature shaft in aXial al'inement with said wheel shaft; at including friction carried by them; and carried by said wheel shaft and connected with the friction memher on that shaft to shift said member axially, including a weight, means connecting wheel shaft, arranged members respectively governor mechanism mm wheel sh speed L said 11d mm uh? may be n'm rate,

arm With Wheel a urn said table; a 1L d Wheel;

carrying; saia m in u l l ,iwen' a coupi member governor mechu shaft :1 CL 201m be; 011 mat 5h? 2 all)", inchuhngg said W61:

z firm cordunce with Wheel shaft, am!

adjust thQ sup my said 1110*;1.

C1 frame :1

LESS of variatim te (hereby s at n predetern awed uniform in; motor shaft, 1% 02$ Ymziiml 11 5aof what-'10P motel 511a The combinahon with for sound remrd: 0i 1 a directly enga 1 urn s21 carrpng 5a ill $311M. :1 couphng wars 

